The Diboson Excesses in Leptophobic $U(1)_{\rm LP}$ Models from String Theories

TL;DR

This paper explores leptophobic $U(1)_{LP}$ models derived from string theories as explanations for the ATLAS diboson excesses around 2 TeV, analyzing their construction and collider phenomenology.

Contribution

It demonstrates how leptophobic models can be built within string theory frameworks and shows their potential to explain collider anomalies.

Findings

Leptophobic $U(1)_{LP}$ models can be constructed from string theories.

These models can account for the observed diboson excesses.

Collider analysis supports the interpretation of excesses within these models.

Abstract

The ATLAS Collaboration has reported excesses in the search for resonant diboson production with decay modes to hadronic final states at a diboson invariant mass around 2 TeV in boosted jets from $WZ$, $W^+W^-$, and $ZZ$ channels. Given potential contamination, we investigate the anomalies in leptophobic $U(1)_{\rm LP}$ models. We show that leptophobic models can be constructed in flipped $SU(5)\times U(1)_X$ models from free fermionic string constructions and Pati-Salam models from D-brane constructions. Additionally, we perform a collider phenomenological analysis to study production cross sections for $pp \to Z' \to jj/t \bar{t}/WW/Zh$ and discover the excess can be interpreted in both the leptophobic flipped $SU(5)\times U(1)_X$ models and intersecting D-branes.